Implement nearbyintf32 and nearbyintf64 and remove two test ignores

Author: bjorn3

scripts/test_rustc_tests.sh

@@ -50,7 +50,6 @@ rm -r tests/run-make/c-link-to-rust-va-list-fn # requires callee side vararg sup
 rm -r tests/run-pass-valgrind/unsized-locals
 
 # misc unimplemented things
-rm tests/ui/intrinsics/intrinsic-nearby.rs # unimplemented nearbyintf32 and nearbyintf64 intrinsics
 rm tests/ui/target-feature/missing-plusminus.rs # error not implemented
 rm -r tests/run-make/emit-named-files # requires full --emit support
 rm -r tests/run-make/repr128-dwarf # debuginfo test
@@ -125,8 +124,6 @@ rm -r tests/run-make/compressed-debuginfo
 
 rm -r tests/run-make/extern-fn-explicit-align # argument alignment not yet supported
 
-rm tests/ui/codegen/subtyping-enforces-type-equality.rs # assert_assignable bug with Coroutine's
-
 # bugs in the test suite
 # ======================
 rm tests/ui/backtrace.rs # TODO warning

src/intrinsics/mod.rs

@@ -341,6 +341,8 @@ fn codegen_float_intrinsic_call<'tcx>(
         sym::roundf64 => ("round", 1, fx.tcx.types.f64, types::F64),
         sym::roundevenf32 => ("roundevenf", 1, fx.tcx.types.f32, types::F32),
         sym::roundevenf64 => ("roundeven", 1, fx.tcx.types.f64, types::F64),
+        sym::nearbyintf32 => ("nearbyintf", 1, fx.tcx.types.f32, types::F32),
+        sym::nearbyintf64 => ("nearbyint", 1, fx.tcx.types.f64, types::F64),
         sym::sinf32 => ("sinf", 1, fx.tcx.types.f32, types::F32),
         sym::sinf64 => ("sin", 1, fx.tcx.types.f64, types::F64),
         sym::cosf32 => ("cosf", 1, fx.tcx.types.f32, types::F32),
@@ -392,13 +394,16 @@ fn codegen_float_intrinsic_call<'tcx>(
         | sym::ceilf64
         | sym::truncf32
         | sym::truncf64
+        | sym::nearbyintf32
+        | sym::nearbyintf64
         | sym::sqrtf32
         | sym::sqrtf64 => {
             let val = match intrinsic {
                 sym::fabsf32 | sym::fabsf64 => fx.bcx.ins().fabs(args[0]),
                 sym::floorf32 | sym::floorf64 => fx.bcx.ins().floor(args[0]),
                 sym::ceilf32 | sym::ceilf64 => fx.bcx.ins().ceil(args[0]),
                 sym::truncf32 | sym::truncf64 => fx.bcx.ins().trunc(args[0]),
+                sym::nearbyintf32 | sym::nearbyintf64 => fx.bcx.ins().nearest(args[0]),
                 sym::sqrtf32 | sym::sqrtf64 => fx.bcx.ins().sqrt(args[0]),
                 _ => unreachable!(),
             };